15-Letter Words End with 'tion'

There are 187 15-letter words that end with 'tion'.

autocorrelation	acclimatization
alphabetization	antisegregation
antispeculation	antivivisection
cannibalization	catheterization
circularization	circumscription
circumvallation	civilianization
codetermination	criminalization
crystallization	cyanoethylation
deacidification	decalcification
decarboxylation	decarburization
decasualization	decertification
deconcentration	decontamination
deglamorization	dehydrogenation
demagnetization	democratization
demystification	denitrification
desacralization	desensitization
desertification	desexualization
destabilization	desulfurization
detribalization	devitrification
diagonalization	dichotomization
differentiation	disarticulation
discontinuation	disintoxication
disorganization	dissatisfaction
diversification	commodification
complementation	computerization
conveyorization	counterpetition
counterquestion	counterreaction
electrification	hospitalization
hypercorrection	hyperinvolution
hyperproduction	hypersalivation
hypostatization	maldistribution
marginalization	masculinization
materialization	mathematization
megacorporation	microdissection
microprojection	miniaturization
etherealization	excommunication
exemplification	experimentation
extemporisation	extemporization
exteriorization	externalisation
externalization	latensification
misconstruction	misdistribution
misrecollection	misregistration
misvocalization	formularization
frenchification	familiarization
immortalization	inconsideration
indemnification	indetermination
infantilization	instrumentation
insubordination	intensification
interconnection	interdigitation
intergeneration	interiorization
intermodulation	internalization
interpopulation	intervisitation
intrapopulation	intussusception
nationalization	nonconservation
nonconstruction	nonexploitation
nonintervention	nonprescription
objectification	phosphatization
phosphorylation	photoexcitation
photoionization	photoproduction
postdevaluation	postinoculation
postirradiation	postpollination
poststimulation	postvaccination
romanticization	parametrization
personalization	personification
semiabstraction	standardization
oligomerization	overapplication
overconsumption	overcultivation
overelaboration	overexpectation
overspeculation	overstimulation
overutilization	quadruplication
radioprotection	rationalization
reaccreditation	reafforestation
reauthorization	recertification
reconcentration	reconfiguration
reconsideration	recontamination
redetermination	refortification
precancellation	preimplantation
premodification	prenotification
preregistration	procrastination
prognostication	proselytization
prussianization	regionalization
reincorporation	reinvestigation
reorchestration	reprivatization
resocialization	retroreflection
revisualization	suboptimization
suborganization	suburbanization
subvocalization	superimposition
supersaturation	supplementation
syllabification	synchronisation
synchronization	systematization
transfiguration	transliteration
transplantation	ultrafiltration
underestimation	underproduction
vascularization

Note: These 187 15-letter words that end with 'tion' are found from the USA & Canada version of the tournament Scrabble word list.

Also see words end with ation, ction, ition, ption, ution, ntion, rtion, etion, stion, otion.

6-letter words end with 'tion' (10)
7-letter words end with 'tion' (28)
8-letter words end with 'tion' (104)
9-letter words end with 'tion' (215)
10-letter words end with 'tion' (331)
11-letter words end with 'tion' (448)
12-letter words end with 'tion' (397)
13-letter words end with 'tion' (370)
14-letter words end with 'tion' (286)
15-letter words end with 'tion' (187)